Bung for tank filling and discharge fittings



l. DARLING AND W. W. CURRY.

BUNG FOR TANK FILLING AND DISCHARGE FITTINGS. APPLIcAnoN msn nc.2.1s19.

1,422,342. Patented July 11, 1922.

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% g 'il w/mfssfs E j NVEWR f ose/uh Par y .4,741 1 f Waf/:enWCu/f A TTORNEYS JOSEPH DARLI'NG A'ND W. CURRY, OF CHICORA, PENNSYLVANIA.

Bama BoB Tamil' FILIiING ANDJDISCHARGE FIT'DINGS.

Specification of Letters Patent.

PatentedJuly 1I, 192'2.

Application led December 2, 1919. Serial No. 341944.

To alli/tem t may comen-z Be it known that we. Josemi Daems-o and WARREN lll. Conni'. citizens of the United States. and residents of Chicoru, in the county of Butler and State of Pennsylvania, have made certain new and useful lmprovcmeitsfiny Bungs for Tank Filling: and Discharge Fittings, of which the following is a s" ecification. y y

ur present invention relates generally to the filling and discharge of tanks, andinore articularly to metallic barrels or containers lflor gasoline and other fluids in connection with which the formation of gas Within the container renders such operationfparticw larly the discharging operat.iondiicu1t in so fan as guarding against Waste is; conearned.

Our present invention 1s directed particu-v larly tofa novel bung construction adaptingL the same to utilization with atanktilling and iseliarge fitting as hereinafter described, the latter of which forms the subject matter M of aseparate applicatioxnand our invention 25 issuch as to bring: about the advantagesv which will be especially pointed` out ,in the specification to follow.

An the accompanying drawing illustrating Y our, invention y Figure 1 is a longitudinali sectional view through our improvements, y t figure? is-a detailed perspective-,view of one end of the plug manipulating member; 1 Figure is a detailed perspective view of` one end of a modified form of the member sh rvnin Figure 2. and

igure .4; is a: sectional view illustrating aslightly modified means of securing the f bu gin place. y. v

r these figures.` the barrel. tank or other container iny connection with,

`ferring now to which ourrinventionis utilized. and a portionof which appears at10'in Figures 1 and a, has a threaded bung-hole l1, into which the reduced threaded end 12 of the bung 13 screws. This reduced end 12 of the bung provides the latter with an annular external shoulder 11 intermediate its ends and opposing the outer surface of the container and between which and the container there is preferably inserted a Washer or packing 15. designed to prevent leakage at this point, and the required pressure upon which is obtained by screwing the bungr tightly into the bung hole 11.

The hung 13 provided in our invention has an axial. bore 16;, one end of which opens throughy its inner reducedA end 12. the said bore being threaded` for at least a portion ofmits length and opening at its opposite end into a threaded counter-bore 1T, between which and the `bore 16 there is thus` formed an inner lannular shoulder 18 facing in a direction relatively opposite to the external shoulder 14, before mentioned.

p Theithreadsof the bore 16 receive the threaded portion 1-9 of a closing? plug. of which thethreaded portion' 19 constitutes one end, the opposite end terminating in a squared portion 20 between which and the threaded portion 19 is an enlargedy annular` r1li21hadapted to oppose. the shoulder 18, asseenparticularly in F ig. 1. The shoulder 18 recelves a` Washer or packing 252. against. a portion of which the rib Z1 hears, although itis to be noted that the Washery 22 and, the shoulder 18 y are of considerable greaterfdiameter than that of the 211, str-as, to leave an. annular space around the latter for the reception ofthe innerY threaded end ofa hollow barrel 24.

`The threaded end 23 of the barrel` 2a enages the threads of the counter bore 1T of t e hung, and` bears against the washer 22 in they engaged positionin connection; with the bung. as seen in Figure 1,. and has a1 polygonal surface: 25 intermediate its ends for the connection of a Wrench to screw the barrel 24ht1ghtly infplace with respect to the bung, The loarr,e124f` is furthermore providedL With an intermediate angulary nipple to whichY a filling or dischargel pipe ZT may been aged by any suitable means/the outer end o the, barrel being reduced and externelly threaded asA at,.28.for the reception of an` apertured cap 29? inwardly throughA the aperture of whichy projects an axiallyV disposed stem 30. yy y V Outvvardl beyond the Vouter endr of the barrel 24 the stem 30 has a handle 31 of any suitable formation.y the cap or gland 39 env closing packing 32 and Washers 33 and 34 around the outer portion of the stem 30 to prevent leakage at the outer' end of the barrel.

As seen in Figures 1 and 2, the inner end of the stem 30 Within the barrel 21 is enlarged as at 25. this enlargement having a squared end socket 36 for the reception of the squared end 20 of the screw plug 19 of the bung. The stem of enlargement 39 is also provided with a spring finger 37 secured thereto, and the free end of which projects within the squared socket `3adjacent'one side wall so as to frictionally grip the squared end at one side, andthus hold the plug in connection with the plug has been turnedlout of the bung to permit of the passage of fluid either to or from the container 10.

It is obvious that instead of screwing the bung 13 into a threaded opening of the barrel tank, or other container, as described in connection with Fig. 1, and which construction is preferred in connection with container already in use, we may, if so desired, and in connection with containers to he constructed, provide for the extension of the threaded end 12 of the bung 13, as

' seen in Figure 4, entirely through the opening of the container 10a, so' as to ada t the same to the reception of a threaded clamping ring 38 within the container and .against the inner surface of the latter. In this way the external shoulder of the bung will abut the outer surface of the container and the washer or packing 15 may be dispensed with by brazing the parts together at theirpj'oints Y of contact.

le may furthermore provide the plug manipulating stem 30 with a squared extension at its inner end as seen iny Figure 8, Where the stem appears at 30a and its enlarged end 35a has a squared extension 36 with `a spring linger 37a. In this case the squared extension 36el will of course enter a Squared socket of the bung plug, which latter `will he'modfied "in respect to the construction of Figure l'toy thisextentt lt is obvious that by thus providing a bung so constructed as to permit of the asf sociauon therewith af a suing er *discharging device, at the time" the biigfplugjs fully closed. we are enabled to either disclgarge or fill the .container without danger o Alealnrge even in connectionpwith particularly permeable fiulds or fluids developing gaseous pressure within their containers; for

instance the lighter hydro-carbone.

` In discharging "ln use with `the hung 13 associated with the barrel.y tank 4or other container, either as seenin Fig. Ilor as seen in Fig. 4, `the plug thereof is of' course normally closed. the contents the threaded the stem 30 after end of the barrel 24 is first screwed with- Y. in the threaded counter-bore 17 of the bung.

until it tightly engages the Washer 22 held against der 18 of the bung and said end surrounds the rib 21 of the plug. Then after the pipe 2T is connected to the nipple 26 the handle 31 of stem 30 is grasped and the stem pushed inwardly until its inner enlarged end properly engages the outer portion of the plug. The handle 3l is then turned to unscrew the threaded portion 19 of the plug and from the threaded portion 16 of the bung, and when entirely unscrewed, the inner enlarged end of the stem with the plug in connection therewith by virtue of the engagement of the plug by the spring finger, may be drawn to a point adjacent the outer end of the barrel past the nipple 26 and thus free outlet of the fluid provided for.

In closing the tank or container, the plu is returned to the bung and screwed there# in tightly7 against the washer 22 before the barrel24 is finally unscrewed and removed.

We claim A bung comprising a bushing having an externally threaded reduced inner end adapted to extend through bung hole of the container, said reduced and Lthreaded portion defining `an annular shoulder adapted to be seated against the outer face of the container in Huid tight relation, said inner end also having a threaded central bore` the outer end of the bushing expanded and having an enlarged internally threaded counter bore defining an annular shoulder at its inner end. a packing ring seated on this shoulder`r a` plug having a wrench head at its outer end and the inner end threaded to be seated in the first mentioned bore of the bushing, laterallyY from said plug intermediate its threaded portion and the wrench head, said collar adapted to he seated on said packing ring, the diameter ot' said collar being suf# ic'ientlv less than the diameter of* the counter bore to permit passage of the threaded end of a nozzle to he screwed into the counter bore past the collar and against the aforesaid packing ring.

JSEPH DARLINGA WARREN W. CURRY.

packing or the internal shoulan annular collar extending. 

